Data/hora: 05/06/2024 00:48:06

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 10/09/2013
Data da última atualização: | 19/07/2017
Autoria: | LACERDA, J. J. de J.; FURTINI NETO, A. E.; RESENDE, A. V. de; SANTOS, J. Z. L. dos; CARNEIRO, L. F.; OLIVEIRA, C. H. C. de.
Afiliação: | JULIAN JUNIO DE JESUS LACERDA, UFLA; ANTONIO EDUARDO FURTINI NETO, UFLA; ALVARO VILELA DE RESENDE, CNPMS; JOSE ZILTON LOPES DOS SANTOS, Universidade Federal do Amazonas; LEANDRO FLAVIO CARNEIRO, UFG; CESAR HENRIQUE CAPUTO DE OLIVEIRA, UFLA.
Título: | Crop growth response and dynamics of inorganic phosphorus fractions after application of reactive Arad phosphate rock in Oxisol with different land use histories.
Ano de publicação: | 2013
Fonte/Imprenta: | African Journal of Agricultural Research, v. 8, n. 26, p. 3454-3461, July 2013.
DOI: | 10.5897/AJAR2013.6855
Idioma: | Inglês
Conteúdo: | Adsorbed or precipitated phosphorus can be susceptible to dissolution depending upon environmental conditions. This work evaluated both the partitioning and availability of the inorganic forms of P bound to Al, Fe and Ca in samples of a clayey Dystrophic Red Latosol (Oxisol) (DRL) with different land use history, fertilized with Arad reactive natural phosphate in Goias State, Brazil. The inorganic fractions of Al- P, Fe-P and Ca-P and the contents of Mehlich-1, ion-exchange resin, citric acid and Olsen extracted available P were determined in DRL. Plants grown in soil previously cultivated produce more beans than plants grown in soil not previously cultivated. The fractions Al-P and Fe-P represent the main inorganic forms in clayey DRL, being phosphorus availability closely related with the fraction Al-P. The distributions of the inorganic fractions of P in the soil fertilized with reactive phosphate were Fe-P = 45%, Al-P = 40% and Ca-P = 15%. The phosphorus content determined by alkaline extraction (Olsen Method) was closely related to levels of Al-P and Fe-P. On other hand, the concentrations determined by extracting acids (Mehlich-1 and citric acid) were more related to the Ca-P fraction. Fe-P and Al-P inorganic forms stocked over time with successive fertilizations in Oxisol with a history of cultivation in no-tillage may return to soil solution and provide the nutrient demand of plants.
Palavras-Chave: | Adubação fosfatada.
Thesagro: | Cerrado; Fósforo; Solo.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/89217/1/Crop-growth.pdf
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (25322-1) - UPC - AP - DD -  -  -  - DIS